HIVES FOR BEE-KEEPERS. 
99 
made in their edges, so that zinc wider than their inter- 
space can be run in, and kept in position. Zinc 
expands and contracts greatly by change of tempera- 
ture, and would be, consequently, likely to seriously 
buckle if given in full sheet ; but this is entirely pre- 
vented by the arrangement described. 
The section-racks (sr, Fig. 33) are constructed on 
the general plan of the brood-chambers, with which 
they have the same length, but a slightly greater 
breadth ; their edges, however, abut accurately upon 
the brood-boxes, which is accomplished by giving 
to the sides a small outside bevel. Since they are 
intended to hold frames accommodating qjin. by 
qjin. section-boxes, they are only 5Jin. deep, which 
allows ^in. for top and bottom bars of frames, and 
fin. for two half bee-spaces. The sides of the section- 
racks are fin. only (fin. less than that of the brood- 
boxes), giving ift. full of internal width to the 
section-rack, which thus accommodates seven frames, 
each carrying four of the sections previously named. 
The thinning of the side necessitates battening, to 
give the tightening-screws (.r) sufficient hold, and 
the rack itself adequate rigidity. The tin rest and 
rabbet are applied to these racks as to the body- 
boxes. The arrangement and management of sur- 
plus honey receptacles will be treated generally in 
a later chapter, to which any further description may 
well be deferred, especially as other inventors have 
here continued the march beyond Mr. Heddon’s 
position. 
Mr. D. A. Jones, while retaining the specialties of 
the hive under consideration, has introduced several 
H 2 
